126 lines
4.0 KiB
C++
126 lines
4.0 KiB
C++
/****************************************************************************
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Copyright (c) 2011-2013,WebJet Business Division,CYOU
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http://www.genesis-3d.com.cn
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef __PARTICLE_DECAL_TARGET_H__
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#define __PARTICLE_DECAL_TARGET_H__
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#include "particles/particle_fwd_decl.h"
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#include "particles/particletarget.h"
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#include "particles/particle.h"
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namespace Particles
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{
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class ParticleDecalTarget: public ParticleTarget
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{
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__DeclareSubClass(ParticleDecalTarget, ParticleTarget );
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//----------------------------------------------------------------------
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public:
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class Decal_OP
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{
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public:
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void operator()(
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Particle* particle,
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const Math::float3& derivedPos,
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const Math::float3& lastDerivedPos,
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IndexT index,
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ParticleVertexData* particleVertex,
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ushort* indicies) const
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{
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Math::float3 eyedir = cameraPos - derivedPos;
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eyedir.normalise();
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Math::float3 diffdir = derivedPos - lastDerivedPos ;
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diffdir.normalise();
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Math::float3 rightVector = eyedir.crossProduct( diffdir );
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rightVector.normalise();
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Math::float3 right = rightVector * particle->mSize.x() * 0.5;
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particleVertex[0].mNormal = eyedir;
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particleVertex[1].mPosition = derivedPos - right;
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particleVertex[1].mNormal = eyedir;
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particleVertex[2].mPosition = derivedPos + right;
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particleVertex[2].mNormal = eyedir;
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particleVertex[3].mNormal = eyedir;
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if (index > 1)
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{
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ParticleVertexData* lastVertexIndex = particleVertex-4;
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particleVertex[0].mPosition = lastVertexIndex[1].mPosition;
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particleVertex[3].mPosition = lastVertexIndex[2].mPosition;
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}
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else
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{
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particleVertex[0].mPosition = lastDerivedPos - right;
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particleVertex[3].mPosition = lastDerivedPos + right;
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}
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}
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Math::float3 cameraPos;
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};
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public:
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ParticleDecalTarget();
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virtual ~ParticleDecalTarget();
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ParticleTarget::TargetType GetTargetType(void) const;
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void _updateParticle_Common( Particle* particle, ParticleVertexData* particleVertex, ushort* indicies , IndexT particleIndex);
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SizeT _updateTarget_Decal(GPtr<ParticlePool>& pool, ParticleVertexData* particleVertex, ushort* indicies);
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Math::bbox ComputerDecalBoundingBox( GPtr<ParticlePool>& pool ) const;
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void _updateTarget(GPtr<ParticlePool>& pool, Timing::Time frameTime);
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bool _preparePrimitiveGroup(SizeT& verticesSizeInByte, SizeT& indicesSizeInByte);
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Math::matrix44 GetDecalRotation();
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protected:
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public:
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// @ISerialization::GetVersion. when change storage, must add SerializeSVersion count
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virtual Serialization::SVersion GetVersion() const;
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// @ISerialization::Load
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virtual void Load( Serialization::SVersion ver, Serialization::SerializeReader* pReader, const Serialization::SerializationArgs* args );
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// @ISerialization::Save
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virtual void Save( Serialization::SerializeWriter* pWriter ) const;
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// copy
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virtual void CopyFrom( const ParticleTargetPtr& target );
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};
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}
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#endif // __PARTICLE_RIBBONTRAIL_TARGET_H__
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